Transmission frequency must be accurate and stable: it means that the original remote controls has a transmitter circuitry which frequency may be NOT accurate. Because the universal receiver has a good selectivity (narrow bandwidth), it may not work with bad transmitters that are not stable in frequency, while it works well with our remote control duplicators MULTI, MULTI-ST, FOUR, SENDER, SENDERBATT.

ChangeLog

2017-04-18

Allows receiving two different frequencies and/or modulation types at the same time: now the same receiver, for example, can manage simultaneously both 433.92MHz AM remote controls and 868.8MHz FM remote controls. The second frequency can be setup via parameter 11; to disable the second frequency, set it to 1 (1=disabled). The second frequency modulation can be set by parameer 12. (Thanks to Pawel for this idea)

Corrects a range issue while operating at 288-390 MHz; sensitivity was very poor at 315MHz

extends the range in other frequencies (403.55, 418, 433, 868MHz) by 30-40%;

2015-04-03

2015-01-14

UniRec1: added menu 7 to configure the output as: 1=normally open (default); 2=normally closed
UniRec2: added menu 7 to configure the relay outputs as: 1=normally open (default); 2=normally closed; 3=electric lock before open (when a valid code is received, the output will be activated and after 250ms even the other output will be activated. This is useful when an electric lock should be activated before activating the motor that opens the door/gate); 4=off before on (before activating the output, the other output should be disabled. This is useful to directly control the two phases of an